TY - GEN PB - Verlag Chemie L1 - http://delibra.bg.polsl.pl/Content/2062/Die%20chemische%20industrie%201939.%20nr51.52.pdf L2 - http://delibra.bg.polsl.pl/Content/2062 KW - Chemie T1 - Die Chemische Industrie, 1939, Jg 62, Nr 51/52 UR - http://delibra.bg.polsl.pl/dlibra/publication/edition/2062 ER -